NCR2 and viral infectious disease: For instance, NKp30 and NKp44 are highly induced on Vδ1+T cells after continued activation by γδTCR stimulation in the presence of IL-2 or IL-15, and the inducible NCRs endows Vδ1+T cells with enhanced cytotoxicity against leukemia cells and increased ability to control of virus infection (35, 36).